If would have suggest Juventus to try on 4-1-2-1-2 if they wish to consider to PLAY Tiago as part of their Attacking Option.
Sometime, in order to Fully-Utilise certain player's, it is very much depending on the Squad Formation and Manager's Tactical Play.
It's true that in 4-4-2 formation, the Attacking Midfield sometime would have to compromise especially the club are playing with two Defensive or Center Midfield.
To my opinion, Juventus could still remain their Favourable 442 but trying to used the CM as a RM or LM in order could swift Tiago into AM come to the attacking.
It's just like sometime you see Arsenal playing Flamini as a Wing but this Wing's could help-up as a CM when come to defend and Finally the original CM (says Fabregas) could swift into AM come to attacking!!